Current restore and plan parameter are passed in the key=value form,
which doesn't fix the requirement of key=value pairs for each
resource (i.e dictionary).
Change the restore and plan parameters to be passed in one of the
following formats:
1. JSON using the --parameter-json '{"OS::Cinder::Volume": { ... } }'
2. Multiple --parameter option for each resource:
--parameter resource_type=OS::Cinder::Volume,resource_id=<uuid>,k=v
Change-Id: I416dc1f00060a5c994984ddfc04c30d1a04c803c
b304d5978d